Nmap Development mailing list archives
Sorry more questions on nmap operations
From: maillist <maillist () securityoveride com>
Date: Sun, 11 Jan 2009 12:20:58 -0500
In continuing to understand nmap for this video tutorial im making i came up with some more questions 1) when doing a scan of a specified port like 25 of my host securityoveride.com nmap securityoveride.com -p25 nmap sends a DNS DNS responce received nmap sends a TCP [ACK] to port 80 on securityoverie.com nmap ping request ping reply nmap DNS query DNS responce nmap [SYN] to port 25 [SYN,ACK] received nmap [RST] to port 25 my question is what is the nmap [ACK] to port 80 for? 2) when doing an nmap -sV securityoveride.com -p25 nmap sends a DNS DNS responce received nmap sends a TCP [ACK] to port 80 on securityoverie.com nmap ping request ping reply nmap DNS query DNS responce nmap [SYN] to port 25 [SYN,ACK] received nmap [RST] to port 25 nmap [SYN] to port 25 [SYN,ACK] received nmap [ACK] to port 25 responce postfix blah blah blah nmap [ACK] to port 25 namp [FIN,ACK] [FIN,ACK] received nmap [ACK] my question here is why does nmap send a request [SYN] then a [RST] then make another request [SYN] for the connection. Why doesn't nmap make the connection right away? _______________________________________________ Sent through the nmap-dev mailing list http://cgi.insecure.org/mailman/listinfo/nmap-dev Archived at http://SecLists.Org
Current thread:
- Sorry more questions on nmap operations maillist (Jan 11)
- Re: Sorry more questions on nmap operations Michael Pattrick (Jan 11)